#include <opencv2/opencv.hpp>

#ifndef OPENCV_CUDA_SAMPLES_TICKMETER_
#define OPENCV_CUDA_SAMPLES_TICKMETER_

//class CV_EXPORTS TickMeter
//{
//public:
//    TickMeter();
//    void start();
//    void stop();
//
//    int64 getTimeTicks() const;
//    double getTimeMicro() const;
//    double getTimeMilli() const;
//    double getTimeSec()   const;
//    int64 getCounter() const;
//
//    void reset();
//private:
//    int64 counter;
//    int64 sumTime;
//    int64 startTime;
//};
//
//std::ostream& operator << (std::ostream& out, const TickMeter& tm);


TickMeter::TickMeter() { reset(); }
int64 TickMeter::getTimeTicks() const { return sumTime; }
double TickMeter::getTimeMicro() const { return  getTimeMilli()*1e3;}
double TickMeter::getTimeMilli() const { return getTimeSec()*1e3; }
double TickMeter::getTimeSec() const { return (double)getTimeTicks()/cv::getTickFrequency();}
int64 TickMeter::getCounter() const { return counter; }
void TickMeter::reset() {startTime = 0; sumTime = 0; counter = 0; }

void TickMeter::start(){ startTime = cv::getTickCount(); }
void TickMeter::stop()
{
    int64 time = cv::getTickCount();
    if ( startTime == 0 )
        return;
    ++counter;
    sumTime += ( time - startTime );
    startTime = 0;
}

std::ostream& operator << (std::ostream& out, const TickMeter& tm) { return out << tm.getTimeSec() << "sec"; }

#endif
